Bail rod sleeve for strand tension device



Aug. 14, 1962 R. L. CARROLL 3,049,318

BAIL ROD SLEEVE FOR STRAND TENSION DEVICE Filed Feb. 26, 1950 ROBERT L.CAR/POLL INVENTOR.

ATTORNEY United tates Patent Office 3,049,318 Patented Aug. 14, 19623,049,318 BAIL ROD SLEEVE FOR STRAND TENSION DEVICE Robert L. Carroll,408 McIver St., Greenville, S.C. Filed Feb. 26, 1960, Ser. No. 11,194 4Claims. (Cl. 242-457) This invention relates to a bail rod sleeve for astrand tension device, and has for its purpose to provide a bail rodsleeve of ceramic or refractory material which is an improvement on theconventional metal sleeve now employed for the purpose.

The bail rod in question is a part of a conventional strand or yarntension mechanism such as employed in connection with textile machinery,and the invention has for its purpose to eliminate the wear imposed byyarn or thread on a metal sleeve by substituting a sleeve of ceramic orrefractory material which will wear indefinitely without being affectedby the strands passing over the contacting surface, and a furtherpurpose is to afford a ceramic sleeve that is constructed in suchfashion as to enable the strand or yarn to be readily threaded intooperating position in relation to the guide sleeve and in contacttherewith. I

The sleeve functions as a guide for the yarn and for this purposeincorporates lugs or flanges at its ends between which the yarn isconfined and guided during travel in contact with the sleeve, and itbecomes necessary in threading the yarn into the machine before startingthe operation to move the warn from the bail rod over the lug or flangeat one end of the sleeve without trapping or stopping the yarn againstthe end of the sleeve at the point where it initially comes in contactwith the sleeve, and a particular purpose of the invention is to soconstruct the sleeve and lug or flange at this point as to insureagainst the yarn being trapped or locked against the end of the sleeveand to readily effect its movement over the lug or flange and intofeeding position between the flanges at opposite ends of the sleeve.

The sleeve has a longitudinal opening to receive the bail rod, and eachlug or flange at the ends of the sleeve is provided with a beveled orinclined outer surface that extends at an angle approximately 45 to thelongitudinal axis of the opening through the sleeve. This inclinedsurface extends from about the vertical center of the opening to beneaththe bottom of the opening and intersects the lower part of the openingon an angle of approximately 45 to the longitudinal axis of the sleeve.This results in a wall interposed in the path of the yarn as it isthreaded over the lug or flange into feeding position that is at anacute angle to the direction of movement of the yarn, and thusfacilitates its movement into the desired position in the guide orsleeve, with nothing to obstruct such movement.

If the ends of the sleeve were not inclined but had straightperpendicular surfaces from top to bottom, the yarn when being threadedor positioned would come in contact with such perpendicular surface atthe end of the sleeve and adjacent to the bail rod and the perpendicularsurface would act to trap or hold the yarn at this point, whereasaccording to applicants structure the sleeve ends are beveled orinclined forming a plane surface that intersects the longitudinal axisof the opening in the sleeve at an acute angle, so that when the yarn orstrand is passed under the flange or lug on the sleeve, it does notengage or contact the sleeve initially at a single central point, butcontacts two spaced inclined surfaces on opposite sides of the center ofthe opening at points somewhat below the center of the opening in thesleeve, and the yarn readily travels down over these inclined surfaceson opposite sides of the bail rod without any chance of its beingtrapped or held by the bail rod. The yarn can thus easily be moved overthe flange on the sleeve until it is in operative position on the innerside of the lug or flange of the sleeve and ready to be fed through inthe usual manner.

With these objects in view, the invention consists in the constructionand arrangement of parts that will appear clearly from the followingdescription when read in conjunction with the accompanying drawings, thenovel features being pointed out in the claims following thespecifications.

In the drawings:

FIG. 1 is a view in side elevation of a bail rod sleeve constructed inaccordance with a preferred embodiment of the invention and showing thesleeve fastened to the bail rod of a conventional tension mechanism, theparts shown in phantom being conventional and of the general formillustrated in Patents 2,622,305, Swanson, December 23, 1952, and2,691,810, Goodhue et al., October 19, 1954.

FIG. 2 is a bottom plan view of the sleeve;

FIG. 3 is a longitudinal sectional view taken centrally on the line 33of FIG. 2, and

FIG. 4 is a transverse sectional view on the line 4-4 of FIG. 2.

Referring more particularly to the drawings in which like referencenumerals refer to the same parts throughout the several views, 1designates a body of ceramic or refractory material including a fiattop, a bottom surface 2 that is convexly curved transversely between thelugs or guiding flanges at the ends of the body, said lugs beingindicated generally at 3 and including perpendicular top portions 4 atthe ends of the body, bottom portions 5 at the ends of the convexlycurved bottom surface 2, and beveled or inclined surfaces 6 connectingthe top and bottom end portions 4 and 5 and arranged at an angle ofapproximately 45 to the longitudinal axis of the opening 7 that receivesthe bail rod upon which the sleeve is mounted and to which it ispermanently aflixed by a suitable cementing medium to hold it in placeon the bail road in the position generally illustrated in FIG. 1.

It will be understood that the ceramic sleeve is arranged on the bailrod similarly to the metal sleeves heretofore employed for the purposeand that the yarn travels under the sleeve in contact with the bottomcurved surface 2 as shown in FIG. 1, similarly to the travel of yarnunder the conventional metal sleeve heretofore used.

8 designates the bail rod to which the ceramic sleeve is secured beforeattaching the bail rod at its ends to the frame of the tensionmechanism, and to thread the yarn into operative position under theceramic sleeve, the yarn is initially threaded through the apparatusunder the bail rod 8 as shown in dotted lines in FIG. 1. The operatorthen grasps the yarn at two points and moves it toward the end of thesleeve until it engages the inclined surfaces 6 below the center of thebail rod and on both sides thereof, see FIG. 1. The yarn is thus guideddownwardly over the inclined surfaces 6 until it has passed over thebottom of the lug and is then in position to be retained between andguided by the lugs 3 and bottom surface 5 of the sleeve.

During this positioning of the yarn within the confines of the sleeveguide, the yarn at no point can contact the sleeve along a continuoussurface perpendicular to the bail rod and adjacent to the bail rod sinceas it travels over the bail rod While being moved by the operator overthe inclined surfaces of the sleeve, it necessarily initially contactsthe sleeve at two points on opposite sides of the rod as determined bythe two inclined surfaces on opposite sides of the rod beneath thecenter 3 thereof. Thus there is no possibility of the yarn being trappedor held by the sleeve at this point as would be the case if the sleevewere formed without the incline surfaces described and had only an endsurface perpendicular to the longitudinal axis of the sleeve.

The structure affords an efiicient and practical device enabling fasterand more efficient operation of yarn feeding mechanism where it isnecessary to preliminarily thread or position the yarn in operativerelation to a guide member or sleeve arranged on a bail rod or the likerequiring movement of the yarn by the operator over one end of thesleeve guide, and while the invention has been described in relation tothe particular form disclosed, it is not confined to the details hereinset forth and this application is intended to cover such changes ormodifications as may come within the purposes of the improvement or thescope of the following claims.

I claim:

1. A bail rod sleeve comprising a ceramic body having a top surface anda bottom convexly curved surface that is straight endwise and extendstransversely of the body, the body having a cylindrical openingtherethrough which receives a bail rod, lugs at the ends of the body,top and bottom vertical surfaces defining the lugs, and inclined endsurfaces connecting said top and bottom vertical surfaces and extendingat an angle of approximately 45 to the longitudinal axis of the openingin the sleeve from a point at approximately the vertical center of saidopening to a point below the bottom of said opening in the sleeve, andsaid inclined end surfaces extending substantial distances above andbelow the bottom of said opening in the sleeve, the lower inclinedsurfaces being slightly greater in length than the upper inclinedsurfaces.

2. A bail rod sleeve comprising a ceramic body having a top surface anda bottom convexly curved surface that is straight endwise and extendstransversely of the body, the body having a cylindrical openingtherethrough which receives a bail rod, lugs at the ends of the body,top and bottom vertical surfaces defining the lugs, inclined endsurfaces on said lugs connecting the top and bottom vertical surfacesand extending at an angle of approximately to the longitudinal axis ofthe opening in the sleeve from a point somewhat below the upper part ofsaid opening to a point below the bottom of said opening, said inclinedsurfaces extending substantial distances above and below the bottom ofsaid opening in the sleeve, the lower inclined end surfaces beingslightly greater in length than the upper inclined end surfaces.

3. A bail rod sleeve comprising a ceramic body having a top surface anda bottom convexly curved surface that is straight endwise and extendstransversely of the body, the body having a cylindrical openingtherethrough which receives a bail rod, and lugs at the ends of thebody, top and bottom vertical surfaces defining the lugs, inclined endsurfaces on said lugs connecting the top and bottom vertical surfacesand extending at an angle of approximately 45 to the longitudinal axisof the opening in the sleeve from a point at least slightly higher thanthe vertical center of said opening to a point below the bottom of saidopening, said inclined end surfaces extending substantial distancesabove and below the bottom of said opening in the sleeve, the lowerinclined end surfaces being slightly greater in length than the upperinclined end surfaces.

4. A bail rod sleeve comprising a ceramic body having a top surface anda bottom convexly curved surface that is straight endwise and extendstransversely of the body, the body having a cylindrical longitudinalopening therethrough which receives a bail rod, end surfaces on the bodythat are inclined at an angle of approximately 45 to the longitudinalcenter of said opening, said inclined end surfaces extending substantialdistances above and below the bottom of said opening engaging the yarnat spaced points on opposite sides of the rod and acting to guide theyarn downwardly without trapping it at any point of engagement with thesleeve.

References Cited in the file of this patent UNITED STATES PATENTS2,123,948 Howorth July 19, 1938 2,622,305 Swanson Dec. 23, 19522,691,810 Goodhue et al. Oct. 19, 1954

